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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3685/CH13/EX13.5 | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
| download | Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.gz Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.bz2 Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.zip | |
initial commit / add all books
Diffstat (limited to '3685/CH13/EX13.5')
| -rw-r--r-- | 3685/CH13/EX13.5/Ex13_5.sce | 29 | ||||
| -rw-r--r-- | 3685/CH13/EX13.5/Ex13_5.txt | 5 |
2 files changed, 34 insertions, 0 deletions
diff --git a/3685/CH13/EX13.5/Ex13_5.sce b/3685/CH13/EX13.5/Ex13_5.sce new file mode 100644 index 000000000..e057b5284 --- /dev/null +++ b/3685/CH13/EX13.5/Ex13_5.sce @@ -0,0 +1,29 @@ +clc
+P1 = 0.1 // Air pressure at turbine inlet in MPa
+T1 = 30 // Air temperature at turbine inlet in degree Celsius
+T3 = 900 // Maximum cycle temperature at turbine inlet in degree Celsius
+rp = 6 // Pressure ratio
+nt = 0.8 // Turbine efficiency
+nc = 0.8// Compressor efficiency
+g = 1.4 // Heat capacity ratio
+cv = 0.718 // Constant volume heat capacity
+cp = 1.005 // Constant pressure heat capacity
+R = 0.287 // Gas constant
+T2s = (T1+273)*(rp)^((g-1)/g)
+T4s = (T3+273)/((rp)^((g-1)/g))
+T21 = (T2s-T1-273)/nc // Temperature raise due to compression
+T34 = nt*(T3+273-T4s) // Temperature drop due to expansion
+Wt = cp*T34 // Turbine work
+Wc = cp*T21 // Compressor work
+T2 = T21+T1+273 // Temperature after compression
+Q1 = cp*(T3+273-T2) // Heat added
+n = (Wt-Wc)/Q1 // First law efficiency
+T4 = T3+273-T34 // Temperature after expansion
+T6 = 0.75*(T4-T2) + T2 // Regeneration temperature
+Q1_ = cp*(T3+273-T6)// Heat added
+n_ = (Wt-Wc)/Q1_ //cycle efficiency
+I = (n_-n)/n // Fractional increase in cycle efficiency
+printf("\n Example 13.5\n")
+printf("\n The percentage increase in cycle efficiency \n due to regeneration is %f percent",I*100)
+//The answers vary due to round off error
+
diff --git a/3685/CH13/EX13.5/Ex13_5.txt b/3685/CH13/EX13.5/Ex13_5.txt new file mode 100644 index 000000000..c0735e231 --- /dev/null +++ b/3685/CH13/EX13.5/Ex13_5.txt @@ -0,0 +1,5 @@ +
+ Example 13.5
+
+ The percentage increase in cycle efficiency
+ due to regeneration is 41.407606 percent
\ No newline at end of file |